As you might be aware there has been the Woman football (soccer!) World Champion ship in the US.

I have seen the first game where Nigeria played against North Korea (DPRK won 3-0). I was wondering my self if it was easy for them to go to the US and play there and if they had problems with Immigration when entering the US etc. - I would have liked to see the DPRK playing against the US team.

If I am not mistaken, I believe the North Koreans did play the United States team. Reguardless, for international events such as the World Cup, I would believe that immigration issues are resolved well in advanced.